An ion with mass number 56 contains 3 units of positive charge and 30.4% more
neutrons than electrons. Assign a symbol to the ion.
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- Ion, any atom or group of atoms that bears one or more positive or negative electrical charges. Positively charged ions are called cations; negatively charged ions, anions.
- An ion is a particle, atom or molecule with a net electrical charge. The charge of the electron is considered negative by convention. The negative charge of an electron is equal and opposite to charged proton considered positive by convention.
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